EP0413165A2 - Dispositif d'ébavurage de pièces en matière plastique - Google Patents

Dispositif d'ébavurage de pièces en matière plastique Download PDF

Info

Publication number
EP0413165A2
EP0413165A2 EP90113925A EP90113925A EP0413165A2 EP 0413165 A2 EP0413165 A2 EP 0413165A2 EP 90113925 A EP90113925 A EP 90113925A EP 90113925 A EP90113925 A EP 90113925A EP 0413165 A2 EP0413165 A2 EP 0413165A2
Authority
EP
European Patent Office
Prior art keywords
pressure shoe
grinding belt
movement
supply roll
belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90113925A
Other languages
German (de)
English (en)
Other versions
EP0413165A3 (en
Inventor
Richard Dipl.-Ing. Brüssel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIG Plastics GmbH and Co KG
Original Assignee
Krupp Maschinentechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krupp Maschinentechnik GmbH filed Critical Krupp Maschinentechnik GmbH
Publication of EP0413165A2 publication Critical patent/EP0413165A2/fr
Publication of EP0413165A3 publication Critical patent/EP0413165A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/20—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor

Definitions

  • the invention relates to a deburring device for workpieces made of plastic, in particular thermosetting fiber composite material, with an abrasive belt which is resiliently held in contact with the workpiece surface to be machined during the deburring movement.
  • the invention is based on the object of developing a deburring device which, in particular, permits the reworking, ie fine deburring, of workpiece surfaces and which, if appropriate, also permits automation of such machining processes.
  • the deburring device should also be such that the working area of the grinding belt can be exchanged or renewed without any particular time and effort.
  • the object is achieved by a deburring device with the features of claim 1.
  • the basic idea of the invention is then to bring the abrasive belt, which can be pulled off a supply roll, into sections in engagement via a spring-supported pressure shoe on the tool surface to be machined and to assign a stepping mechanism to the pressure shoe following the work area; this is designed in such a way that it can renew the working area of the grinding belt by guiding it and can hold it in the new position on the pressure shoe after completion of its guiding movement.
  • the step-by-step mechanism allows the deburring device to be used in each case under essentially constant working conditions, without the need for complex replacement processes.
  • the pressure shoe is movably connected to the supporting part in the direction of the workpiece surface to be machined parallel to itself (claim 2); the connection can in particular consist of at least one double link (claim 3).
  • a reliable installation of the sanding belt on the pressure shoe can be achieved in that it is equipped with at least one pressure element for the sanding belt in front of the work area, as seen in the direction of the pull-off movement of the sanding belt from the supply roll (claim 4).
  • this consists of a pressure roller, which may also be resiliently biased towards the surface of the pressure shoe.
  • a spring-loaded piston unit can also be used, the piston of which holds the abrasive belt against the surface of the pressure shoe.
  • the step-by-step mechanism preferably has a rocker arm articulated on the pressure shoe, which is equipped with a holding member that grips the grinding belt and can be pivoted back and forth by means of a rocker drive (claim 5).
  • a rocker drive (claim 5)
  • the grinding belt gripped by the holding member is carried along, as a result of which a previously unused section of the grinding belt reaches the working area of the pressure shoe.
  • the subject of the invention can be further developed in that the stepping mechanism - seen in the direction of the pull-off movement of the grinding belt from the supply roll - is preceded by a clamping member, by means of which the grinding belt can be held on the pressure shoe outside the working area (claim 6).
  • the stepping mechanism has a control which causes the holding member to assume the closed position during the pulling-off movement of the rocker drive - in contrast to the clamping member - and the open position during the return movement of the rocker drive to the starting position when the clamping member is in the closed position (claim 7).
  • the rocker drive (claim 8) - as well as possibly the holding member and the clamping member (claim 9) - is designed as a piston unit.
  • the holding and the clamping member have a rear steel element in the form of a spring element.
  • the cost-effectiveness of the deburring device in particular in the case of automatic operation, can be further improved in that the grinding belt can be adjusted by a predetermined distance via a timer with a preselectable switching time (claim 10). This makes it possible to use the deburring device - depending on the load on the sanding belt in the work area - under almost the same working conditions.
  • the supporting part is supported on a guideway in the manner of a slide.
  • a better utilization of the grinding belt can be achieved in that it is inclined in the working area with respect to the longitudinal direction of the guideway (claim 12).
  • the deburring device has the following main components: a pressure shoe 1, which is attached to a supporting part 4 in a manner movable parallel to itself via a double link with two articulated rods 2, 3, a stepping mechanism 8 fastened to the pressure shoe 1 with three piston units 5 to 7, one via one Console 9 on the support member 4 held supply roll 10 with sanding belt 10 a (Fig. 1) and a fixed to the back of the support member 4 slider 11, over which the support member in the manner of a slide on a guide track 12 in the direction of the double arrow 13 back and forth can be (Fig. 2).
  • the guideway 12 is arranged and designed in such a way that the pressure shoe 1 can move in the longitudinal direction of the surface or edge to be machined of a workpiece 14 made of plastic.
  • the supporting part 4 with the pressure shoe 1 articulated thereon is - as can be seen in FIG. 2 - oriented in such a way that the abrasive belt 10 a, which partially encloses the latter, runs at an angle with respect to the longitudinal direction of the workpiece 14.
  • the connecting arms between the support member 4 and the slider 11 are designated 4 a.
  • the pressure shoe 1 - consisting of a wider head piece 1 a with the working area 1 b and a narrower foot piece 1 c - is supported via the upper articulated rod 2 with the interposition of a spring element 15 on a support plate 16, which in turn is rigidly attached to the support part 4 .
  • the range of motion of the pressure shoe in the vertical direction is determined by a stop block 17 fastened below the support plate 16, on which the lower articulated rod 3 may come to rest during its upward movement.
  • connection points between the articulated rods 2, 3 on the one hand and the pressure shoe 1 or support part 4 on the other hand consist of articulation points 2 a, 2 b and 3 a, 3 b; the articulation points 2 a and 3 a are arranged at the height of the head or foot piece 1 a or 1 c.
  • the pressure shoe 1 - seen in the direction of the pull-off movement (arrow 18) of the sanding belt from the supply roll 10 - is equipped with a pressure roller 19 in front of its working area 1 b; this lies above the supply roll 10 on the side of the pressure shoe facing the support part 4.
  • the grinding belt drawn off from the supply roller 10 wraps around the head piece 1 a on the right side, in the work area 1 b and on the left side.
  • the piston rod 6 c is supported by the action of a prestressed spring element 21 on the left side of the head piece 1 a on the grinding belt 10 a and thus holds it in the predetermined position.
  • the range of motion of the piston 6 b within the housing 6 a is limited by a stop 6 d.
  • the piston rod 7 b of the piston assembly 7, which acts as a rocker drive, is supported via its curved end face 7 c on a rocker arm 22 which is pivotally held on the foot piece 1 c via the hinge point 3 a already mentioned and which carries the piston assembly 5 serving as a holding member.
  • the grinding belt 10 a is held between the piston rod 5 c and an opposite, laterally projecting on the rocker 22 holding surface 22 a.
  • the range of motion of the piston 5 b within its housing 5 a to the left is determined by a stop 5 d.
  • a prestressed tension spring 24 is fastened between the housings 6 a and 5 a. Under their action, the rocker 22 strives to perform a pivoting movement around the hinge point 3 a clockwise.
  • the piston 7 d connected to the piston rod 7 b is held in contact with an end stop 7 e inside the housing 7 a under the action of the restoring force emanating from the tension spring 24, as long as it is not pressurized.
  • the piston assembly 7 serving as a rocker drive does not require a spring element acting on its piston rod 5b.
  • the operation of the stepping mechanism 8 - consisting essentially of the pressure shoe 1, the piston assemblies 5 to 7 and the rocker 22 together with the holding surface 22 a - presupposes that the piston assemblies are linked to one another in a certain manner in terms of control technology.
  • the piston assembly 5 remains in the closed position shown, ie the sanding belt held between the parts 5 c and 22 a is carried downward with the pivoting movement of the rocker 22, while on the one hand a corresponding sanding belt section from the supply roll 10 in the direction of arrow 18 deducted and on the other hand the (and possibly used) sanding belt section previously located in work area 1 b is replaced by a new, unused sanding belt section.
  • the interiors of the housing 5 a, 6 a, and 7 a can be connected via a line 25, 26 or 27 and a control unit 28 in the previously described control connection to a pressure source 29 or an unpressurized outlet 30.
  • the control device can be actuated by an on / off switch 28 a by hand or by a timer 28 b with a preselectable switching time.
  • the piston assembly 6 is depressurized and thereby again acts as a clamping member.
  • the piston unit 5 which was in the closed position up to that point, is brought into the open position by pressurizing its piston 5b, thereby releasing the sanding belt located between the parts 5c and 22a.
  • the rocker 22 can consequently move upwards in the clockwise direction under the action of the tension spring 24 and with the entrainment of the piston rod 7b without carrying the grinding belt in this direction.
  • the piston unit 5 is also put into the closed position by depressurization, in which the sanding belt is held again between the parts 5 c and 22 a.
  • the distance by which the grinding belt can be tracked by pulling it off from the supply roll 10 into the working area 1b can be changed in a simple manner in that the stroke which can be carried out by the piston 7d of the rocker drive 7 - by displacing the end stop 7e within the housing 7 a - is enlarged or reduced.
  • the tracking movement can be influenced in that the stepping mechanism (in particular by multiple actuation of the switch 28 a) executes several work cycles in succession.
  • the step-by-step mechanism of the deburring device can be actuated in such a way that - for example after every tenth deburring process - it tracks the grinding belt by a distance which corresponds approximately to the dimension of the working area 1b.
  • "Working area” is to be understood as the area in which the grinding belt resting on the pressure shoe is simultaneously in engagement with the workpiece surface to be machined.
  • the step-by-step mechanism 8 is expediently equipped, following the piston unit 5, with a cutting unit which makes it possible to cut off the used section of the grinding belt.
  • the cutting unit can be designed in such a way that it is fastened directly next to the piston rod 5 c on the rocker 22 and, for example, cooperates with its holding surface 22 a as a counter surface.
  • the fixation of the grinding belt 10 a in the work area 1 b (see FIG. 1) can be further improved by the fact that the pressure roller 19 also serves as a holding member.
  • the pressure roller with a locking element For example in the form of a hydraulically operated brake disc.
  • the brake disk under the action of a prestressed spring, assumes the braking position in the depressurized state, in which it rests on the pressure roller 19 and thereby prevents an unwanted rotary movement.
  • the advantage achieved by the invention is, in particular, that the deburring tool can be renewed remotely without any particular effort and time; the deburring device is therefore also suitable for automatically running corresponding machining operations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP19900113925 1989-08-17 1990-07-20 Device for deburring workpieces made out of plastics Withdrawn EP0413165A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893927085 DE3927085A1 (de) 1989-08-17 1989-08-17 Entgrateinrichtung fuer werkstuecke aus kunststoff
DE3927085 1989-08-17

Publications (2)

Publication Number Publication Date
EP0413165A2 true EP0413165A2 (fr) 1991-02-20
EP0413165A3 EP0413165A3 (en) 1991-06-26

Family

ID=6387247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900113925 Withdrawn EP0413165A3 (en) 1989-08-17 1990-07-20 Device for deburring workpieces made out of plastics

Country Status (2)

Country Link
EP (1) EP0413165A3 (fr)
DE (1) DE3927085A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291825A (en) * 1994-07-29 1996-02-07 Grieshaber Masch Introducing fresh abrasive belt to the surface of a workpiece having convex surfaces encompassed by clamping arms,without opening the arms
CN108393782A (zh) * 2017-02-08 2018-08-14 东莞市铁犀智能科技有限公司 超长砂带抛光机
CN114918792A (zh) * 2022-05-31 2022-08-19 浙江博得新材料科技有限公司 一种多角度调节功能具有清洁机构的塑料产品用打磨装置
EP4049789A1 (fr) * 2021-02-25 2022-08-31 Apex Automatisierungs- & Präzisionstechnik GmbH Outil d'ébavurage doté d'un porte-bande abrasive
CN117532439A (zh) * 2024-01-09 2024-02-09 泰州市永宁亚克力制品有限公司 一种亚克力板材半成品用的可调式毛边打磨装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014502C1 (de) * 2000-03-23 2001-09-13 Thuringia Netzsch Maschinen Un Schleifmaschine, insbesondere Randschleifmaschine für keramische Werkstücke
EP2660030A1 (fr) * 2012-05-03 2013-11-06 Franz Oberflächentechnik GmbH & Co. KG Lissage d'une pièce injectée en plastique
DE102016107965A1 (de) * 2016-04-29 2017-11-02 Supfina Grieshaber Gmbh & Co. Kg Bandfinishvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1813841A1 (de) * 1967-12-18 1969-07-10 Wst Patenter Ab Anordnung an Profilabgratvorrichtungen mit einer hin- und hergehenden Schleifflaeche
FR2003866A1 (fr) * 1968-03-14 1969-11-14 Daimler Benz Ag
US3545138A (en) * 1968-06-17 1970-12-08 Mosler Safe Co Metal polishing apparatus
DE2145471A1 (de) * 1970-09-15 1972-05-10 Heesemann, Karl, 4970 Rehme Schleifvorrichtung zum Kantenbrechen an Werkstücken
DE2442129A1 (de) * 1974-09-03 1976-03-11 Johannsen Maschf Hans Bandschleifmaschine fuer kunststofffenster
DE8717353U1 (de) * 1987-12-07 1989-01-05 Heinrich Zeidler Maschinenfabrik Gmbh & Co Kg, 8672 Selb Vorrichtung zum schrittweisen Bewegen und Spannen des Schleifbands von Tellerfuß-Durchlauf-Schleifmaschinen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE49730C (de) * HILLE & MÜLLER in Schönau bei Schluckenau in Böhmen Blech-Schleif- und Polirmaschine
DE1849170U (de) * 1962-01-08 1962-03-29 Lutz Kg Eugen Bandschleifmaschine.
DE6606947U (de) * 1968-03-14 1970-12-10 Daimler Benz Ag Vorrichtung zum schleifen von insbesondere lackierten blechoberflaechen
DE1965129A1 (de) * 1969-12-27 1971-07-15 Kalle Ag Vorrichtung zum Beschichten eines Faserschlauchs
US3971163A (en) * 1974-12-23 1976-07-27 Dow Corning Corporation Abrasive tape apparatus for contouring a flexible lens
JPS59156507A (ja) * 1983-02-25 1984-09-05 Ishikawajima Harima Heavy Ind Co Ltd 圧延ロ−ルの研削装置
DE8536578U1 (de) * 1985-12-27 1986-02-13 Monstadt, Ulrich, 4600 Dortmund Vorrichtung zur Aufarbeitung von Kunststoffprofilen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1813841A1 (de) * 1967-12-18 1969-07-10 Wst Patenter Ab Anordnung an Profilabgratvorrichtungen mit einer hin- und hergehenden Schleifflaeche
FR2003866A1 (fr) * 1968-03-14 1969-11-14 Daimler Benz Ag
US3545138A (en) * 1968-06-17 1970-12-08 Mosler Safe Co Metal polishing apparatus
DE2145471A1 (de) * 1970-09-15 1972-05-10 Heesemann, Karl, 4970 Rehme Schleifvorrichtung zum Kantenbrechen an Werkstücken
DE2442129A1 (de) * 1974-09-03 1976-03-11 Johannsen Maschf Hans Bandschleifmaschine fuer kunststofffenster
DE8717353U1 (de) * 1987-12-07 1989-01-05 Heinrich Zeidler Maschinenfabrik Gmbh & Co Kg, 8672 Selb Vorrichtung zum schrittweisen Bewegen und Spannen des Schleifbands von Tellerfuß-Durchlauf-Schleifmaschinen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291825A (en) * 1994-07-29 1996-02-07 Grieshaber Masch Introducing fresh abrasive belt to the surface of a workpiece having convex surfaces encompassed by clamping arms,without opening the arms
US5683291A (en) * 1994-07-29 1997-11-04 Maschinenbau Grieshaber Gmbh & Co. Device for surface machining of workpieces
GB2291825B (en) * 1994-07-29 1998-02-11 Grieshaber Masch Device for surface machining of workpieces
CN108393782A (zh) * 2017-02-08 2018-08-14 东莞市铁犀智能科技有限公司 超长砂带抛光机
EP4049789A1 (fr) * 2021-02-25 2022-08-31 Apex Automatisierungs- & Präzisionstechnik GmbH Outil d'ébavurage doté d'un porte-bande abrasive
CN114918792A (zh) * 2022-05-31 2022-08-19 浙江博得新材料科技有限公司 一种多角度调节功能具有清洁机构的塑料产品用打磨装置
CN117532439A (zh) * 2024-01-09 2024-02-09 泰州市永宁亚克力制品有限公司 一种亚克力板材半成品用的可调式毛边打磨装置
CN117532439B (zh) * 2024-01-09 2024-03-29 泰州市永宁亚克力制品有限公司 一种亚克力板材半成品用的可调式毛边打磨装置

Also Published As

Publication number Publication date
EP0413165A3 (en) 1991-06-26
DE3927085A1 (de) 1991-02-21

Similar Documents

Publication Publication Date Title
DE3736438C2 (de) Schleifmaschine, insbesondere zum Schleifen von Scherenteilen
CH637587A5 (de) Vorrichtung zum umreifen von gegenstaenden mit einem kunststoffband.
DE2856868C2 (fr)
EP0413165A2 (fr) Dispositif d'ébavurage de pièces en matière plastique
EP0418476A2 (fr) Dispositif d'enduction d'un matériau en bande passant le long d'un contre-rouleau
DE1966347C3 (de) Werkstückstützlager einer Werkzeugmaschine. Ausscheidung aus: 1964489
EP0881041A2 (fr) Machine d'écrouissage pour vilbrequins
DE2741581C3 (de) Vorrichtung zum Transport von Bolzen, Muttern o.dgl. Werkstücken auf Mehrstufenbearbeitungsmaschinen
EP0241892A2 (fr) Ponceuse à bande
DE1577652C3 (de) Beschichtungsvorrichtung für eine Papierbahn
EP0305767A2 (fr) Dispositif pour la fixation d'un chariot sur une machine-outil
DE3005089C2 (de) Vorrichtung zur auswechselbaren Halterung einer Matrize eines Werkzeugs in einer Metallbearbeitungsmaschine und Werkzeug zur Auswechslung der Matrize
EP0346468A1 (fr) Installation de revetement gazothermique de pieces
DE2234180B2 (de) Bremsvorrichtung für den Schützen einer Webmaschine
DE3048738C2 (de) Vorschubeinrichtung zum intermittierenden Drehen eines Kreissägeblattes
EP0711638B1 (fr) Chariot d'alimentation de pièces pour une machine-outil, en particulier une scie circulaire
DE1904385C3 (de) Schneidaggregat zum Beschneiden von grob zugeschnittenen Werkstücken aus Textilien, dünnem Leder oder ähnlichen Werkstoffen
DE2713358C3 (de) Bandschleifmaschine zum Abschleifen insbes. von Schweiß-, Lot- oder Teilungsfugengraten an Messerheften oder ähnlich geformten Werkstücken
DE3517764A1 (de) Schleifmaschine zum stirnflaechenschleifen zylindrischer werkstuecke
DE3040919A1 (de) Schleifmaschine fuer schneidwerkzeuge
DE1779879C3 (de) Vorrichtung zum Aufbringen von Scheuerstreifen auf eine drehbare Reifenaufbautrommel. Ausscheidung aus: 1729830
DE8220015U1 (de) Schleifmaschine
DE3320256C2 (fr)
DE1941438A1 (de) Schneidvorrichtung
AT81846B (de) Maschine zum Herstellen von Kontaktplättchen und zMaschine zum Herstellen von Kontaktplättchen und zum Aufschweißen derselben auf Schaltteilen für eleum Aufschweißen derselben auf Schaltteilen für elektrische Apparate. ktrische Apparate.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19911228